Upsides To Making A Portal To Heaven  
   To   Build   The   Factory   There   
  
                                          
 First Of  All,  Real  Estate: The Highly 
 Fractalized  Geometry  (Not  Proven  But 
 Likely To  Be  The  Case) Implies Almost 
 Unlimited Room; Even  If The Portal Tech 
 Would  Be  Stolen,  Chances  Of  Running 
 Into  A  Competitor Is  Close  To  None, 
                                          
 Secondly,  The  Resources:  Heavens  Own 
 Alchemical  Properties   (Proof  Exist!) 
 Makes  Most  Base Materials  Easily  And 
 Readily Available.  Once  The  Molecular 
 Movement  Patterns  Are Mapped Out,  Any 
 Compound   Can  Be   Created   Virtually 
 Without                            Cost. 
                                          
                                          
  
   Downsides To  Making  A Portal  To   
  Heaven To  Build  The Factory  There  
  
                                          
 Current  Portal Tech  Takes  Some Energy 
 To Hold Open, Which  Isn'T A  Problem In 
 Itself. Test  Results However  Has Shown 
 That Without An  Active Tether, Heaven'S 
 Time Flow Breaks  Down  Completely. Even 
 A Momentary  Fluctuation  Of  The Portal 
 Would   Render    All    Remote   Assets 
 Practically  Lost.  Much  Care  Must  Be 
 Taken  To  Maintain   Portal  Stability. 
 (One  Option Could  Be Several  Portals)