Can these parts be changed about techies Aghanims scepter upgrade?

[kyhmr]

Techies Aghanims isn’t that good, in fact its quite bad, I rarely see it, if people even bother playing techies in the first place.

And when I try it, either nobody walks in the 200-unit radius or someone does, immediately walks out of it and its over.

Setting it up is also extremely dangerous, disabling you for a couple of seconds and with no cast range. While there can only exist one minefield sign at a time is just sad.

Please apply one of the following buffs:

1. Remove the 1 sign limitation
2. Increase the trigger radius to 500 (same radius as without Aghanims and Proximity mines).

[kyhmr]

to further prove my point i saw this on the forums:

https://www.reddit.com/r/DotA2/comments/1fh6zac/ignored_heroes_in_ti13/

I don't think its unreasonable to ask for some techies aghs buffs. His zap-thing also leaves a lot to be desired, it doesn't fit his kit at all and I struggle to understand how it is useful in the majority of cases. Maybe have it zap the attacker, because the aoe of the disarm is extremely small.