See, I like the whole idea of reducing the dicepool modifiers. It makes that skillrank + attribute so much more important, it's grittier and I really like the flavor. Dumping the bonuses as a whole, rather than have players grumbling and having the stuff not work inside facilities anyway, sounds like something more fitting that gritty flavor. With the faster hacking, longer battles and a few houseruled options for hackers to spoof communications, I keep the gritty flavor while not going "urk" on DRM and XBone (which is now XBOX180, aka XBibo) stuff.
Well, I agree of sort on some points, but the fact is that if you dump all the bonuses instead of making them full part of the cyber instead of their "reduced equivalent without wireless", you will favor a lot implants that by their sheer presence give large bonuses (like wired reflexes, because IP do it better, indeed you would not get the reaction bonuses, but an IP is a lot more worth of losing your essence that just pushing a limit. If talking about character optimization, I prefer having Edge and higher quality gear and possibly some points left for something, that spending huge money on implants, being seen as very dangerous and having hard time because of it, be it socially, for your freedom and for your health. And not getting something really worth of it. External equipment has this advantage that when you need to let it go, it is easy, all it takes is to drop it. Difficult with cyber, then you have to improve even further or stay at the same place, but improving is more constraining and limited.
So if implants bonus are kept at the "low level" of SR5, I predict that your houserule would favor some combos, given some players.
For the mark access problem on items, it should not be related to the time/complexity of the related action you trigger, which if I followed well, is a second action after you put the mark on the item, but to the degree of security making sense to such a function. Because actually, a credstick payment should not be so long or complicated (if it is long, it pisses off corps because it is not time efficient so they lose money, which they don't like). And even with rating 5, if you only need one mark to make a fund transfert or a virtual payment to your credstick, well, there will be a new kind of trick for players that won't need to have to deal with car stealing and organ harvesting to pull up some extra money;)
SO saying that triggering a grenade is 1 mark is plain illogic for me. If you were needing wireless at all, that I'll accept for the sake of reasoning (but thinking of it, I would not think it is the same kind of wireless that what use decks and commlinks. The same way your bluetooth thing is not wifi, and that they are different from FM SB WB radiowaves and so on. So no hacking in this regard. Unless you decide to specifically use your brains against your own survival by linking this nice trigger command to your commlink for special effects;)).
There aren't really any cheap decks, but you can buy a comlink with a high firewall, slave all your wireless devices to the comlink and let the comlink defend the rest of your nodes.
Still Michael solution offer the advantage of not being dependant on the grid. Would I be a spider, what I would do if my site was attacked would be to cut access to outside matrix by cutting the relays on my field (cause in a building, this is likely that there must be relays to go outside of the Faraday Cage. Physics did not change so much in 70 years;))
Or you can just have your team's decker slave the gear to his deck (which could turn nasty if your decker crosses you...).
Or get wasted with a bullet. Deckers took so much of a powerup with their new all in one abilities that they could be the new mages (and as such, be shot/thrown grenades first).
As for new decks attributes, that is not so different from all 3 first editions, as their was some Force, Body, Masking and another (don't remember clearly, sorry), plus Hardening and MPCP as a device rating, and response were the wired reflexes of matrix. That only changed a lot in 3rd ed and totally in 4th. I guess that range could be assessed from device rating as it was part of its purpose in SR4. And I don't see too much to whatever else this rating could be used (that and being the opposite of noise, so you don't losing signal because of your cheap deck would be some kind of interesting challenge at times;)). Actually the idea of array is fine, will give more diversity, and I guess more constraint to customize instead of starting from scratch. This "return" to old attributes makes me regret even further program carriers;)