obelisk range +1

Seems like Obelisk is not used much and that it is underpowered. Could use +1 range.
Rationale: it uses tons of energy (150) and costs a lot ($1500), compared to ATWR (30 energy, $1000) which has a range of 8. (Obelisk is 7 at the moment).
Obelisk also is comparatively easily destroyed since its HP are lower. Since it's vulnerable to power outages and artillery, it seems a bit more range will help get better use out of it.