Hi.
As for me I now updated most devices to new capsman from wifi package. Now I have dual capsman running for few devices like some cAP lite and SXT.
Is it in plans that devices with mipsbe (still some new devices) will be upgraded to the new capsman/wifi package in near or far future release of RouterOS?
Don’t think so.
Radio chipsets on those devices are not wave2 capable.
Don’t you have this built into your obsolensce budget planning for 1,2,5,10,15 years down the line 
EVERY X years change TV (10)
EVERY Y years change CAR (12 ish)
EVERY Z years change IPHONE. (3 ish)
EVERY A years change WIFI devices ( often coincides with IPHONE ) (3-5ish)
EVERY B years change router ( typically should be WIFI DEVICES + 5 years, but more closely related to ISP changes )
etc etc..
I change my car about every 4 years.
I need to for tax deductions 
Usually over 200.000km then, so it’s not that I don’t use them.
iPhone is replaced like … never. I can’t replace what I never will have … 
Hmmm, and I lived all these years totally unaware of the necessity of an obsolescence budget planning.
No time like the present to start. Like all those people using Winblowz 10 that are now suddenly left with unsupported paper weights. The writing was one the wall for some time. People not planning for the ever nearing obsolescence get burned.
I change my TV when the old one stops working.
Don’t have car - no use for them.
I don’t have Iphone (use Android), and change it when the old one dies and/or cannot handle the tasks.
I change wifi devices when… Well, I almost don’t change them. All my heavy network load is cabled - wifi is just for kindle, mobile and Netflix. Don’t fix what isn’t broken.
I change my router when it can’t handle the load and/or dies.
Yes, I’m the bane of the industry.
At work is different. Everything has an expiry date. At home? Changed only when needed.
In Brazil you have a different plan LOL.
You have to plan for theft replacement. If it aint locked down and you are not paying the police, it gets disappeared.
But yes, typically at home, use it till its not fixable or no longer does the job required.
Not here where I am.
We only have to lock the doors and run from the police. 
No problem to change my device, byt new devices are still some on mibslbe, so i should install new devices only on arm when i like the new capsman?